CN100588764C - The dehydration control apparatus of washing machine and method - Google Patents

The dehydration control apparatus of washing machine and method Download PDF

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Publication number
CN100588764C
CN100588764C CN200610151771A CN200610151771A CN100588764C CN 100588764 C CN100588764 C CN 100588764C CN 200610151771 A CN200610151771 A CN 200610151771A CN 200610151771 A CN200610151771 A CN 200610151771A CN 100588764 C CN100588764 C CN 100588764C
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Prior art keywords
unbalance
amount
permission
washing machine
revolution
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Expired - Fee Related
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CN200610151771A
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CN1928207A (en
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具本权
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LG Electronics Inc
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LG Electronics Inc
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00Control of operations performed in washing machines or washer-dryers 
    • D06F33/30Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/40Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of centrifugal separation of water from the laundry
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02Characteristics of laundry or load
    • D06F2103/04Quantity, e.g. weight or variation of weight
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26Imbalance; Noise level
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48Drum speed
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/52Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/54Changing between normal operation mode and special operation modes, e.g. service mode, component cleaning mode or stand-by mode
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00Control of operations performed in washing machines or washer-dryers 
    • D06F33/30Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48Preventing or reducing imbalance or noise

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

The invention discloses a kind of dehydration control apparatus and method.Described dehydration control apparatus comprises: memory cell, store the rate of acceleration corresponding to laundry amounts, the maximum amount of unbalance of permission and the minimum amount of unbalance of permission in advance; And control module, control repeatedly increases and reduces the operation of the revolution (RPM) of the per minute of motor's for washing machine in the zone between the minimum amount of unbalance of maximum amount of unbalance that allows and permission, up to the minimum amount of unbalance of detected amount of unbalance less than permission.

Description

The dehydration control apparatus of washing machine and method
The theme that the No.10-2005-0083376 of korean application formerly that the application relates on September 7th, 2005 and submits to is comprised, at this by with reference to the full content of quoting this application.
Technical field
The present invention relates to a kind of washing machine, relate in particular to a kind of dehydration control apparatus and method of washing machine, its clothing that can in the washtub (wash tub) of washing machine, distribute more equably, thus avoid noise, vibration and excessive energy consumption.
Background technology
Usually, washing machine mechanically applies the function (that is, will remove from clothing such as contaminants such as dust, oil stain, spot or pollutant) that washing clothes is carried out in suitable friction or vibration by the clothing in being in laundry detergent compositions.
For this reason, washing machine is carried out: washing step, to be in water that washing agent mixes in clothing apply mechanical force; Rinse step, washing agent rinsing from clothing that will comprise contaminants is gone out; And dehydration, washings are removed (that is, making clothes dewatering) from clothing.
In dehydration, if clothing skewness in washtub, then washtub might become uneven, thereby causes serious vibration and noise in the washing machine.
Therefore, washing machine need have the equally distributed function of the clothing of making.In correlation technique,, according to detected UB amount clothing is evenly distributed then and realize this function by detecting imbalance (UB) amount.
Fig. 1 is the flow chart that illustrates according to the operation relevant with dewatering with the detection of UB amount of the washing machine of correlation technique.
As shown in Figure 1, detection of the UB of washing machine amount and dewatering comprise: the motor (S11) that drives washing machine with low velocity; Sensing is along with variation motor's for washing machine speed (that is revolution of per minute: variable quantity RPM), thereby detection UB amount (S12) of time; Detected UB amount and the benchmark UB amount of presetting are compared (S13); And when detected UB amount is measured greater than benchmark UB, carry out the equally distributed function of clothing (S14A), and when detected UB amount is measured less than benchmark UB, make clothes dewatering (S14B) by the RPM that increases washing machine.
To describe the detection (S12) of UB amount now in detail.
At first, be installed in the RPM that speed detection unit in the motor's for washing machine is used for measuring in the preset time section motor, and the RPM of definite motor changes.
Maximum variable quantity and minimum change are used for determining UB amount and laundry load amount.
The UB amount of utilizing said method to determine and benchmark UB amount corresponding to the preset negative carrying capacity are compared.Result based on the comparison, when the UB amount of determining measure greater than benchmark UB, the motor of washing machine stopped, with the rotation direction of change motor.Thereby, carry out making the equally distributed function of clothing.
According to comparative result, if the UB that determines amount less than benchmark UB amount, is then removed for the water that will be included in the clothing, the RPM of motor's for washing machine increases to carry out dehydrating operations.Subsequently, RPM reduces, thereby determines the UB amount.When the UB amount of determining is measured less than benchmark UB, carry out dehydration at faster speed.Then, in the certain hour after the RPM of washing machine reaches a default dewatering speed, the RPM of washing machine reduces once more, to redefine the UB amount.When the UB amount that redefines was measured greater than benchmark UB, the motor of washing machine stopped, and to change the rotation direction of motor, made the equally distributed function of clothing thereby carry out once more.
When the UB amount that redefines was measured less than benchmark UB, the current RPM of washing machine increased to reach a default dewatering speed.Then, carry out the dehydration of the scheduled time, stop dehydration subsequently with predetermined dewatering speed.
When the UB amount of determining is measured little pre-determined number than benchmark UB, think that laundry load is little load, thereby carry out independent dehydration algorithm.
The method of determining little load can realize in the following way: the RPM that carries out increase repeatedly and reduce motor in comprising the washing machine of small amount relatively passes through these operations and definite UB amount to reach the operation of dewatering speed.
Therefore, in the length definite consuming time of the medium and small load of correlation technique, and the RPM of motor's for washing machine is increased to higher speed, thereby causes noise and vibration and unnecessary energy consumption.
Summary of the invention
Therefore, the present invention is intended to a kind of dehydration control apparatus and method of washing machine, and it has overcome basically because restriction and caused one or more problem of defective of correlation technique.
The invention has the advantages that uneven barrel of noise and the vibration that cause having reduced owing in the washing machine.
Another advantage of the present invention is that clothing is little load in the identification bucket, to reduce unnecessary energy consumption.
Other features and advantages of the present invention will be illustrated in following specification, and its part is clearly from specification, perhaps can know by implementing the present invention.By the structure of in explanatory note book, claims and accompanying drawing, being specifically noted, can realize and obtain these and other advantage of the present invention.
For realizing these and other advantage, and according to purpose of the present invention, as this concrete implements and broadly described, dehydration control apparatus according to a kind of washing machine of the present invention comprises: memory cell, store the rate of acceleration corresponding to laundry amounts, the maximum amount of unbalance of permission and the minimum amount of unbalance of permission in advance; And control module, in the scope between the minimum amount of unbalance of maximum amount of unbalance that allows and permission, control repeatedly increases and reduces the operation of revolution of the per minute of motor's for washing machine, up to detected amount of unbalance less than the minimum amount of unbalance that allows.
In another program of the present invention, a kind of dehydration control apparatus of washing machine comprises: memory cell, store the rate of acceleration corresponding to laundry amounts, the maximum amount of unbalance of permission and the minimum amount of unbalance of permission in advance; And control module, in the zone between the minimum amount of unbalance of maximum amount of unbalance that allows and permission, control repeatedly increases and reduces the operation of revolution of the per minute of motor's for washing machine, up to detected amount of unbalance less than the minimum amount of unbalance that allows; Wherein, when the operation that increases and reduce the revolution of per minute repeats when surpassing certain number of times, be defined as little load, thereby use default dehydration algorithm individually.
In another program of the present invention, a kind of dehydration controlling method of washing machine comprises the steps: to set the zone of the minimum amount of unbalance of the maximum amount of unbalance that has permission respectively and permission; In starting the process of dehydration mode, detect amount of unbalance by the revolution that in the zone of setting, increases or reduce the per minute of motor's for washing machine, and repeat up to the minimum amount of unbalance of detected amount of unbalance less than permission; And repeat when surpassing certain number of times when the operation of revolution that increases and reduce the per minute of motor's for washing machine, be identified as little load, thereby carry out independent dehydration algorithm.
In another program of the present invention, a kind of dehydration controlling method that is used for washing machine comprises: the zone of setting the minimum amount of unbalance of the maximum amount of unbalance have permission respectively and permission; Increase the revolution of the per minute of motor's for washing machine, under first target velocity, detecting first amount of unbalance, and when first amount of unbalance revolution increase of per minute is a certain amount of during less than the first benchmark amount of unbalance, to detect second amount of unbalance; Compare second amount of unbalance, and according to the revolution that relatively increases or reduce per minute, up to the minimum amount of unbalance of second amount of unbalance less than permission; Within a certain period of time when second amount of unbalance during less than the minimum amount of unbalance that allows, the revolution of per minute is increased to second target velocity, subsequently will be under second target velocity detected the 3rd amount of unbalance and the second benchmark amount of unbalance compare, thereby determine whether further to increase the revolution of the per minute of motor; And repeat when surpassing certain number of times when the operation of revolution that increases and reduce the per minute of motor, be identified as little load, thereby carry out independent dehydration algorithm.
Should be understood that above general description and following detailed description all are schematically and indicative, and aim to provide further specifying the invention of asking for protection.
Description of drawings
To describe embodiments of the invention in detail now, the example is shown in the drawings.
In the accompanying drawings:
Fig. 1 is the flow chart that illustrates according to the operation relevant with dewatering with the detection of UB amount of the washing machine of correlation technique.
Fig. 2 is the diagram coordinate diagram that illustrates according to the dehydration of the washing machine of correlation technique.
Fig. 3 is the block diagram that illustrates according to the dehydration control apparatus structure of the washing machine of the embodiment of the invention.
Fig. 4 is the flow chart that illustrates according to the dehydration controlling method of the washing machine of the embodiment of the invention.
Fig. 5 is the coordinate diagram that illustrates according to the dehydration of washing machine of the present invention.
The specific embodiment
The present invention is described in detail now with reference to accompanying drawing.
The dehydration control apparatus and the method for washing machine hereinafter are described with reference to the accompanying drawings, it is by reaching at RPM before the speed that is used to start final UB amount deterministic process, increase and/or reduce the RPM of motor's for washing machine, make that detected UB amount is in the UB preset range of permission under the current RPM of motor, thereby make clothing shake distribution more equably in (trumbling) zone, thereby can shorten dehydration start-up time and reduce noise and vibration at the centrifugal distributed areas and the clothing of washing machine drum.
Fig. 3 is the block diagram that illustrates according to the dehydration control apparatus structure of the washing machine of the embodiment of the invention.
As shown in Figure 3, the dehydration control apparatus according to washing machine of the present invention is provided with motor 100, driver element 500, memory cell 300, display unit 400 and control module 200.
Motor 100 rotates washtub in washing machine.Driver element 500 CD-ROM drive motors 100.Memory cell 300 is stored the best rate of acceleration corresponding to laundry amounts, the maximum UB amount of permission and the minimum UB amount that allows in advance.
Control module 200 is carried out the overall control of washing operation.According to the present invention, control repeatedly increases and reduces the operation of the RPM of motor in the scope of control module 200 between the minimum UB amount of maximum UB amount that allows and permission, up to the minimum UB amount of detected UB amount less than permission.
Surpass certain number of times if the operation that increases and reduce RPM is repeatedly carried out, control module 200 is identified as little load with laundry load, and utilizes default little load dehydration algorithm to proceed the dehydration of washing machine.
Illustrate in greater detail the present invention now with reference to Fig. 4.
At first, memory cell 300 is stored the best rate of acceleration corresponding to laundry amounts, the maximum UB amount of permission and the minimum UB amount that allows in advance.
Memory cell 300 forms for example read-only storage (ROM) table, and the database of the minimum UB amount of the gradient (tilt) corresponding to laundry amounts, the maximum UB amount that allows and permission is shown.
Control module 200 is by setting the rate of acceleration corresponding to laundry amounts, the maximum UB amount of permission and the minimum UB amount (SP2 and SP2) that allows from memory cell 300 values.
Then, after the speed of the motor 100 of washing machine was increased to first target velocity, control module 200 was determined the UB amount (SP3) under first target velocity, and UB amount and first benchmark UB amount are compared (SP4).
When measuring less than the first benchmark UB according to comparative result the one UB amount, control module 200 increases the RPM of motor with definite the 2nd UB amount (SP5), subsequently the 2nd UB amount and the minimum UB amount that the maximum UB that allows measures and allows is compared (SP6).
Control module 200 is repeatedly determined the 2nd UB amount and is carried out the operation (SP7 and SP8) that increases or reduce the RPM of motor's for washing machine, measures less than the minimum UB amount that allows up to the 2nd UB.
As shown in Figure 5, when determining that the 2nd UB amount is measured greater than the maximum UB that allows, control module 200 reduces a scheduled volume (SP7) with the RPM of motor.But when the 2nd UB amount during greater than the minimum UB amount (SP8) that allows less than the maximum UB amount that allows, control module 200 increases a scheduled volume (SP5) again with RPM.Repeat aforesaid operations, up to determining that the 2nd UB amount is less than the minimum UB amount that allows.
Here, control module 200 is determined to increase or whether the operation that reduces RPM repeats above pre-determined number (SP12).If determine that aforesaid operations repeats above pre-determined number, control module 200 is identified as little load with laundry load, thereby uses independent dehydration algorithm (SP13).
In correlation technique, the mode that detects the UB amount is: repeatedly increase the RPM of motor, reduce RPM then to detect the UB amount.If detected UB amount is identified as little load less than the situation repetition of benchmark UB amount and above pre-determined number.Above-mentioned steps length consuming time.On the other hand, for the present invention, at first in the scope that the maximum UB of minimum UB amount that comprises permission and permission measures, determine the UB amount.The RPM of this scope is lower than the RPM when determining the 3rd UB amount.Then, repeat the operation that increases or reduce the RPM of washing machine and surpass pre-determined number to detect the 2nd UB amount, the 2nd UB amount should be in the zone of the UB amount that comprises permission.If detected UB amount does not reach the UB amount of permission in other pre-determined number, then be defined as little load.Thereby, use independent dehydration algorithm.By above-mentioned steps, can shorten the start-up time of dewatering.
Then, when the 2nd UB amount was measured less than the minimum UB that allows, control module 200 was increased to second target velocity to detect the 3rd UB amount (SP9) with the RPM of washing machine.Then, control module 200 will detected the 3rd UB amount compare with second benchmark UB amount under second target velocity.Control module 200 further increases RPM (SP10) according to relatively determining whether then.
When RPM being increased to detected the 3rd UB of second target velocity amount and measure less than the second benchmark UB, control module 200 increases the RPM of motors, thereby carries out dewater (SP11).
In the present invention, reach before the speed that is used to start the 3rd UB amount deterministic process at RPM, under the state of setting the scope between the independent permission UB amount, increase or reduce RPM, so that be within the UB weight range of permission, thereby clothing more is evenly distributed in the washtub in determined UB amount under the current RPM of washing machine.
As mentioned above, in the present invention, the dehydration control apparatus of washing machine and method are by reaching at RPM before the speed that is used to start the 3rd UB amount deterministic process, increase and/or reduce the RPM of motor's for washing machine, so that detected the 2nd UB amount is in the UB weight range of permission under the current RPM of washing machine, and clothing is redistributed in washtub, thereby can shorten dehydration start-up time and reduce noise and vibration.
It is obvious to those skilled in the art that under the situation that does not break away from spirit of the present invention or scope and can make various modifications and variations the present invention.Therefore, the modifications and variations that fall in appended claims and the equivalent scope thereof are contained in the present invention.

Claims (10)

1. the dehydration control apparatus of a washing machine comprises:
Memory cell is stored the rate of acceleration corresponding to laundry amounts in the described washing machine, the maximum amount of unbalance of permission and the minimum amount of unbalance of permission in advance; And
Control module, in the zone between the minimum amount of unbalance of the maximum amount of unbalance of described permission and described permission, control repeatedly increases and reduces the operation of revolution of the per minute of described motor's for washing machine, up to the minimum amount of unbalance of detected amount of unbalance less than described permission;
Wherein, repeatedly carry out when surpassing certain number of times when the operation that increases or reduce the revolution of described per minute, described control module is identified as little load with this situation and uses little load dehydration algorithm; And when described detected amount of unbalance during less than the minimum amount of unbalance of described permission, described control module increases the revolution of the per minute of described washing machine, uses independent benchmark amount of unbalance then, thereby carries out dehydration.
2. device as claimed in claim 1, the zone between the maximum amount of unbalance of wherein said permission and the minimum amount of unbalance of described permission is set in the centrifugal distributed areas of clothing and clothing shakes between the zone, is used for evenly distributing clothing.
3. device as claimed in claim 1, wherein when increasing and reduce the revolution of described per minute, use the zone between the minimum amount of unbalance of the maximum amount of unbalance of described permission and described permission erratically, and the zone between the minimum amount of unbalance of the maximum amount of unbalance of described permission and described permission has independent rate of acceleration according to the laundry amounts in the described washing machine.
4. the dehydration control apparatus of a washing machine comprises:
Memory cell is stored the rate of acceleration corresponding to laundry amounts in the described washing machine, the maximum amount of unbalance of permission and the minimum amount of unbalance of permission in advance; And
Control module, in the zone between the minimum amount of unbalance of the maximum amount of unbalance of described permission and described permission, control repeatedly increases and reduces the operation of revolution of the per minute of described motor's for washing machine, up to the minimum amount of unbalance of detected amount of unbalance less than described permission;
Wherein, when the operation that increases and reduce the revolution of described per minute is repeatedly carried out above preset times, use default single load dehydration algorithm; And when described detected amount of unbalance during less than the minimum amount of unbalance of described permission, described control module increases the revolution of the per minute of described washing machine, uses independent benchmark amount of unbalance to carry out dehydration then.
5. device as claimed in claim 4, the zone between the maximum amount of unbalance of wherein said permission and the minimum amount of unbalance of described permission is set in centrifugal distributed areas and shakes between the zone, is used for evenly distributing clothing.
6. device as claimed in claim 4, wherein when increasing and reduce the revolution of described per minute, use the zone between the minimum amount of unbalance of the maximum amount of unbalance of described permission and described permission erratically, and the zone between the minimum amount of unbalance of the maximum amount of unbalance of described permission and described permission has rate of acceleration respectively according to described laundry amounts.
7. the dehydration controlling method of a washing machine comprises the steps:
Set the zone of the minimum amount of unbalance of the maximum amount of unbalance have permission respectively and permission;
In starting the process of dehydration mode, detect amount of unbalance by increase in the zone of described setting or the revolution that reduces the per minute of described motor's for washing machine, and repeat up to the minimum amount of unbalance of detected amount of unbalance less than described permission;
When the operation of revolution that increases and reduce the per minute of described washing machine was repeatedly carried out above pre-determined number, being identified as clothing was little load, thereby carries out independent little load dehydration algorithm; And
When detected amount of unbalance during, increase the revolution of the per minute of described washing machine, and use independent benchmark amount of unbalance, thereby carry out dehydration less than the minimum amount of unbalance of described permission.
8. the dehydration controlling method of a washing machine comprises the steps:
Setting has the zone of the minimum amount of unbalance of the maximum amount of unbalance of permission and permission;
Increase the revolution of the per minute of described motor's for washing machine, to detect first amount of unbalance under first target velocity, and when described first amount of unbalance increases the revolution of described per minute during less than the first benchmark amount of unbalance with certain gradient, to detect second amount of unbalance;
The maximum amount of unbalance of described second amount of unbalance and described permission and the minimum amount of unbalance of described permission are compared, and increase or reduce the revolution of described per minute according to comparative result, up to the minimum amount of unbalance of described second amount of unbalance less than described permission;
Within a certain period of time when described second amount of unbalance during less than the minimum amount of unbalance of described permission, the revolution of described per minute is increased to second target velocity, subsequently will be under described second target velocity detected the 3rd amount of unbalance and the second benchmark amount of unbalance compare, thereby determine whether further to increase the revolution of the per minute of described washing machine; And
When the operation of revolution that increases and reduce the per minute of described washing machine is repeatedly carried out above pre-determined number, be identified as little load, thereby carry out independent little load dehydration algorithm.
9. method according to claim 8 wherein increases or the operation that reduces the revolution of described per minute comprises the revolution that increases the per minute of described motor's for washing machine according to the laundry amounts in the described washing machine with predetermined rate of acceleration.
10. method according to claim 8, the operation that wherein determines whether further to increase the revolution of described per minute comprises when described detected the 3rd amount of unbalance increases the revolution of the per minute of described washing machine during less than the described second benchmark amount of unbalance, thereby carries out dehydration.
CN200610151771A 2005-09-07 2006-09-07 The dehydration control apparatus of washing machine and method Expired - Fee Related CN100588764C (en)

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